CKEditor is a rock-solid, feature-rich WYSIWYG HTML editor for developers, offering collaborative editing, customization, and 300+ features.

TinyMCE is the world's most trusted WYSIWYG HTML editor, offering developers a feature-rich, customizable rich text editing solution for web applications.

CKSource creates CKEditor, the leading enterprise-grade JavaScript rich text editing solution for developers building scalable web applications.

Summernote is a super simple, lightweight WYSIWYG editor built on JavaScript, jQuery, and Bootstrap for easy web content editing.

Moxiecode developed TinyMCE, the world's most popular web-based WYSIWYG editor, along with asset management (MoxieManager) and file upload tools (Plupload).

Quill is a free, open source WYSIWYG rich text editor built for the modern web, offering a modular architecture and expressive API for developers.

Tiptap is a headless, open-source editor framework providing tools for building custom content editing experiences with features like real-time collaboration and AI integration.

ProseMirror is an open-source, in-browser structured text editing component that bridges the gap between WYSIWYG and semantic document editing.

Draft.js is a React framework for building extensible rich text editors, offering declarative APIs and immutable state management for complex text composition.

Slate is a completely customizable framework for building rich text editors using React and TypeScript for developers.